Why do chameleons change their skin color?

Three surely? Solid, liquid and Gas? Actually, it’s more like fifteen. Although the list grows almost daily, some examples are: Solid, amorphous solid, liquid, gas, plasma, super-fluid, supersolid, degenerate matter, neutronium, strongly symmetric matter, weakly symmetric matter, quark-gluon plasma fermionic condensate.

Bose-Einstein condensate and ‘strange matter’. The most interesting is possibly Bose-Einstein condensate, or ‘bec’. which occurs when you cool a specific substance down to a fraction below absolute zero (-273 degrees), at this point, things get peculiar.

For example if you put a ‘bec’ in a beaker, and keep the beaker at the correct temperature, the bec will actually climb the sides of the beaker.

This happens because behavior only before observed at atomic levels are observed at greater levels. Some scientists believe the behavior is a result of the bec trying to “reduce it’s own energy”.